Glass-beveling machine.



W. J. PORWSK.

GLASS BBVELING MACHINE,

APPLICATION FILED DBO. v, 1911.

atented Mal". 5, l.

Rowsxi, a subject of the UNrrsn sra WLADYSLAW J. POROWSKI,

r rc.

ar I, l

OF BROOKLYN, NEW YORK.

GLASS-BEVE'LING MACHINE.

Application lcd December 7, 1.911.

' siding in the borough of Brooklyn, in the belt 13 from any suitable source.

.jection 18 which may county of Kings and State ot New York, have invented certain new and useful .lmprovements inGlass-Beveling Machines, of whichthe following is a specification, reterence being had therein to the accompanying drawing. l j

My invention relates to improvements in grinding and polishing machines and has particular reference to the class of grinding and polishing machines adapted for grinding7 polishing, or otherwise manipulating, beveled glass and the like.

'Referring to the accompanying drawings, I have illustrated-in side elevation partly in lsection and with parts broken away, the principal parts of a grinding and polishing lnachine illustrating an application of my invention.

2 is a standard carrying the disk 3 which may be adjusted within the vertical slot 4 by the hand screw 5 and which may be secured within said slot by the bolt G in its adjusted position, and carries the bearing I within which is mounted the shaft S having at its leftward extremity the gear 9 meshing with the gear 10 upon the shaft 11 provided with the pulley' 1Q driven by the The bearing 7 terminates inthe faceplate 14, the lower extremity of which is provided `with a projection lthrough which the spindle 16 provided with a hand wheel 17 projects. The spindle 16 is also provided with the proi be made integral with y secured thereto, and below which the spindle is suitably threaded as shown at 19. The threaded portion of the spindle engages the bearing Q0 which may be raised and lowered on the face 14 by the hand wheel 17 and said bearing Q0 may be secured in its adjusted position by any suitable means such as the bolts 21. The bearing Q0 carries the connection 22 to which is suitably secured the bearing :23 by suitable means such as the bolts Q4. The bearing 23 may be adjusted with reference to the connection 22 by the bolts Q4 which slide within the elongated openings 25.* The shaft 8 terminates at 9.6 as shown. F rom lthe spindle or this it will be seen that the bearing 20 can be shifted out of center by the bolts 21 thus converting the rotary motion into elliptical,

Specification of Letters Patent.

Patented Mar. 5, 1912. serial No. 664,485.

and the elliptical motion can be further adjusted by the bolts Q4. The bearing il?)y also preferably terminates in the extremity 27 upon which may be mounted the sleeve 28. The other end ot the sleeve 28 is also mounted upon the extremity 29 of the" chuck 30.

31. is a hollow tube secured within the bearing 23 and within the sleeve 28 and surrounded by packing such as 32. This bearing is open to the internal chamber 3?) of the sleeve 28 through the ports 34 and connected with the chamber 33 is the flexible tube .35

36 driven by the belt manner.

38 is a hand valve communicating with the atmosphere toregulate the amount o vacuum within the chamber 33. The air is extracted from the internal chamber 39 of the chuck 30, and 40 is the rubber gasket or suitably perforated. face plate against which the work such as the beveled disk, olE glass 41 retained by the vacuum.

42 is the usual grinding or polishin wheel mounted upon the bearing 43 secure within the standard 44.

From this it will be seen that after the bearing 20 has been adjusted by the bolts 21 and any necessary further adjustment has been made by the bolts 24 and vpower has been applied through belt 13, the chuck 3() will rotate either upon a center or elliptically and present the surface of the glass or other article 41 to the oppositely rotating wheel 42. lt will be turtherrobserved that the glass 41 is held to the chuck 30 'by the partial vacuum created by exhausting the air from the chamber 39 through the tube 31, ports 34, chamber 33, and tube 35. In this way the glass or any other 'highly polished object. may be held by the chuck without being gripped by jaws, fingers, clips or other devices which can scratch or mar the surface. It will also be understood that any elliptical motion may be imparted or that the chuck will rotate upon a center and that these adjustments can be regulated very accurately y Of' course it will be readily understood that various modifications may be made without departing trom the spirit of the 37 in any suitable invention as set forth in the claims.

l. claim-d 1. ln a grinding or polishing machine, a vertically adjustable support carrying a shaft and a radial adjustable support carryfrom which air is exhausted from the pump ing ausecond shaft, means for adjusting said second shaft out of alinement with said rst mentioned shaft, means for driving said first mentioned shaft, connection therefrom for driving said second shaft while out of alinement therewith, and a chuck carried by said second shaft. v

2. In a grinding -or polishing machine, a vertically adjustable support carrying a shaft and aradial adjustable support cari yrying a second shaft, means for vadjusting said second shaft out of alineme'nt with said first mentioned shaft, -means for driving saidirst mentioned shaft, connection therefrom for driving said second shaft while o litof alinement therewith, and a chuck carrie a 4 rotatable shaft `carried by said bracket,

shaft mounted adjacent said bracket by said second shaft, said chuck beingv Y,adapted to be exhausted of air and having adapted for adjustment out of alinement with the axis of the shaft carried by said bracket, means actuated by the shaft in said bracket adapted to actuate said ystub shaft, and a chuck carried by said stub shaft.

4. In a grinding machine, a rotatable grinding element, an independent rotatable shaft mounted adjacent thereto, a guide carried by said shaft ablock slidably mounted in said guide, a stub, shaft carried by said guide, means adapted 'to cause said block to slide to and fro, in said stub shaft consisting of a body adapted to guide, when said stub shaft is rotated, a chuck,carried by said i receive the object-to be ground, said 'body being provided with a chamber in communication with the rear surface of said object when said object is in position on said chuck, and means adapted to produce a vacuum in said chamber.

In testimony whereof I aix in presence of two witnesses.

,l 'WLADYSIJAW J. POROWSKI.

Witnesses:

LOUISE ENDERLE, THOMAS A. HILL.

my signature 

